Question

*No part of the energy ever returns to the sun, because passge of energy is concidered to be a ______ transport.*​

Answer 1

DECOMPOSER

Then, before reaching the decomposers, this energy is transferred from trophic level to the next one. Even if the decomposers may dissipate some of the energy in the form of heat, no part of it ever returns to the sun. For this reason, the passage of energy in an ecosystem is considered as 'one way' transport.

Answer 2

unidirectional transport is your ans.

Explanation:

because the NRG towards the sun is one direction , therefore the part of NRG can't returns to the sun.